Following up from my articles on Creating an LDAP Addressbook / Directory and then Securing LDAP with TLS / SSL, I’ll now focus on multi-master replication. Actually, this example will focus on master-master but it can easily be extended out to … Continue reading
This is a continuation of a previous post, Creating an LDAP Addressbook / Directory where we add SSL encryption to the directory. In our case, we used a signed Unified Communications Certificate (UCC) (also known as a Subject Alternative Names (SAN) Certificate) … Continue reading
Fighting SPAM is not easy. Here’s an example of how we configured an ISP mail server cluster to reduce the SPAM load… Continue reading
On our own Asterisk PBX server for our office and on some customer boxes with open SIP ports, we have seen a dramatic rise in brute force SIP attacks. They all follow a very common pattern – just over 41,000 … Continue reading